diff --git a/src/mcjoin.c b/src/mcjoin.c
index 6a7cc1e..5e7e501 100644
--- a/src/mcjoin.c
+++ b/src/mcjoin.c
@@ -774,7 +774,7 @@ int main(int argc, char *argv[])
 		if (!g)
 			FATAL("failed allocating group: %s", strerror(errno));
 
-		g->group = strdup(DEFAULT_GROUP);
+		g->group = DEFAULT_GROUP;
 		TAILQ_INSERT_TAIL(&groups, g, entry);
 		group_num++;
 	}
diff --git a/src/mcjoin.h b/src/mcjoin.h
index 764f8bc..17b70cc 100644
--- a/src/mcjoin.h
+++ b/src/mcjoin.h
@@ -63,8 +63,8 @@ struct gr {
 	size_t       order;
 	size_t       delayed;
 	size_t       invalid;
-	char        *source;
-	char        *group;
+	const char  *source;
+	const char  *group;
 	inet_addr_t  src;
 	inet_addr_t  grp;	/* to */
 	size_t       seqnos[STATUS_HISTORY]; /* for dup detection */